<template>
   <div class="box"></div>
</template>

<script>
export default {

}
</script>

<style scoped>
    .box{
        box-sizing: border-box;
        width: 300px;
        height: 30px;
        border: 2px dashed #000;
        background-color: springgreen;
        margin: 10px;
    }
</style>